In this study, we developed a new method for designing progressive addition-multifocus defocused freeform lenses. We used two independent meridians and achieved a smooth gradient transition of ...

Retailer says it’s 1st to integrate pharmacy and general merchandise in single online order In a recent survey, Walmart customers were asked how the company could better serve them. More than half (55 ...

She did not succeed. Attempting to strike a balance between progressive and pro-business themes, Harris said she’d hold corporations accountable if they didn’t play by the rules — but opined ...